Business Logic is often half your app. So turning 500 lines of code into 5 rules means you get to market faster, and respond to change faster.And, business logic looks like spreadsheet formulas, so it is transparent to both IT and business Users. Such a common language facilitates communication, and can reduce Requirements Risk.

Reduced TCO

Maintenance Automation: Declarative means you specify what, the system automates the when and how. Fully automated dependency analysis / ordering - each time you change logic.